Mr. Andrew E. Wimberly Profile

Andrew E. Wimberly

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Proceedings Article | 13 May 2010 Paper

Spectral face recognition using orthogonal subspace bases

Andrew Wimberly, Stefan Robila, Tansy Peplau

Proceedings Volume 7695, 76952E (2010) https://doi.org/10.1117/12.849892

KEYWORDS: Facial recognition systems, Principal component analysis, Databases, Image fusion, Hyperspectral imaging, Visible radiation, Infrared radiation, Sensors, Infrared imaging, Image sensors

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We present an efficient method for facial recognition using hyperspectral imaging and orthogonal subspaces. Projecting the data into orthogonal subspaces has the advantage of compactness and reduction of redundancy. We focus on two approaches: Principal Component Analysis and Orthogonal Subspace Projection. Our work is separated in three stages. First, we designed an experimental setup that allowed us to create a hyperspectral image database of 17 subjects under different facial expressions and viewing angles. Second, we investigated approaches to employ spectral information for the generation of fused grayscale images. Third, we designed and tested a recognition system based on the methods described above. The experimental results show that spectral fusion leads to improvement of recognition accuracy when compared to regular imaging. The work expands on previous band extraction research and has the distinct advantage of being one of the first that combines spatial information (i.e. face characteristics) with spectral information. In addition, the techniques are general enough to accommodate differences in skin spectra.

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